氨介导的铁循环,用于在先进的氧化过程中激活氧化剂
Guan Wang1, Biao Li1, Yifeng Zhang1
1Department of Environmental and Resource Engineering, Technical University of Denmark, Lyngby DK-2800, Denmark.
Water research
|July 10, 2023
概括
废水中的氨可以激活芬顿处理,通过氨介导的先进氧化工艺 (AOP) 以经济有效的方式去除反抗性有机物和污染物. 这种方法有效地用最小的过氧化处理废水.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 先进的氧化过程 先进的氧化过程
背景情况:
- 废水处理,特别是低碳/低流,面临的挑战在去除反抗性有机物和氨 (NH4+-N) 由于高试剂和能源需求.
- 传统的方法往往在效率和成本效益方面扎,需要创新的方法.
研究的目的:
- 开发一种新的,具有成本效益的先进氧化工艺 (AOP) 来从废水中去除反抗性的有机物.
- 调查氨 (NH4+-N) 作为调解剂在激活芬顿过程中的作用,以加强污染物去除.
主要方法:
- 使用氨介导的先进氧化过程 (AOP),利用NH4+-N来促进Fe (II) /Fe (III) 循环的过氧化 (H2O2) 激活.
- 在不同的NH4+-N度和pH水平下,该过程被评估其在去除NH4+-N,反抗性有机物和酸盐 (PO4-P) 的效率.
主要成果:
- 以氨为媒介的AOP实现了高的去除率:NH4+-N的88.2%,反抗性有机的80.5%,PO4-P的84%.
- 观察到有效的污染物去除,H2O2消耗量低,仅为5mg/L.
- 反复性有机去除效率随着NH4+-N度的增加而增加,并且在pH范围为6-6.8.8的范围内有效 (74-82%).
结论:
- 以氨为媒介的AOP通过利用废水本身的氨含量来提供一种可持续和经济的废水处理方法.
- 这种方法提供了一种有效的污染物去除策略,特别是反抗性有机物,通过调解芬顿处理中的铁循环.
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